Is this bad vacuum?
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Joined: Oct 2002
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From: C.T.
Is this bad vacuum?
My mazda reman with about 20k on it is giving me some problems. my vacum was always about -16 or so till on one hot day it was at about -11. Now when the motor is cold the vac is about -16 but after about 10 mins of driving it goes to about -11. Now my ?? is the motor on the way out or some thing else cause this low vacum??
P.S I been have problem with my wire and my cooling fans
Thanks Mark T
P.S I been have problem with my wire and my cooling fans
Thanks Mark T
Vacuum should be read with all accessories off, foot off the brake, car fully warmed up and at idle. 15" + is a good reading.
If you have a low reading, and you have the stock ECU, check your air pump. If the air pump is not working, you'll get a rougher idle and reduced idle vacuum - been there, done that.
Dale
If you have a low reading, and you have the stock ECU, check your air pump. If the air pump is not working, you'll get a rougher idle and reduced idle vacuum - been there, done that.
Dale
Oh, BTW, make sure you've got a good connection to your boost gauge. The ferrule and nylon tube setup that the Autometers come with is VERY prone to leaking - even a tiny leak will make a difference.
Dale
Dale
Wankel Shmankel
Joined: Mar 2005
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From: Oahu (Hawaii)
Originally Posted by DaleClark
Oh, BTW, make sure you've got a good connection to your boost gauge. The ferrule and nylon tube setup that the Autometers come with is VERY prone to leaking - even a tiny leak will make a difference.
Dale
Dale
does 15" equate to -450mm or so?
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